Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau theo chu snippets" » "cau theo chu snippets", "dai theo chu snippets", "dam theo chu snippets", "dau theo chieu snippets", "dau cho chu snippets", "dau chao chu snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dau theo chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau theo chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau theo chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau theo chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.